Bio 253 Lab. UPDATED ACTUAL Exam
Questions and CORRECT Answers
Levels of Organization - CORRECT ANSWER - 1. Chemical 4. Organ
2. Cellular 5. System (organ)
3. Tissue 6. Organismal
Define tissue and organ. - CORRECT ANSWER - Tissue - Groups of cells with the same
embryonic origin and general function.
Organ - Several tissues having a related function.
Define metabolism. - CORRECT ANSWER - Sum of all chemical processes in the body.
Body planes. - CORRECT ANSWER - Sagittal (midsagittal, parasagittal)
Frontal/Coronal
Transverse
Oblique
What is interstitial fluid? - CORRECT ANSWER - Extracellular fluid that fills the narrow
spaces between cells of tissues.
2 body systems most responsible for regulating homeostasis. - CORRECT ANSWER -
Nervous and Endocrine Systems.
To what do axillary and popliteal refer? - CORRECT ANSWER - Axillary is the armpit.
Popliteal is behind the knee (petella).
Correctly apply the body directions such as inferior-superior, etc. - CORRECT ANSWER -
...
, Main functions of the major body systems - CORRECT ANSWER - Integumentary -
Bones provide strong support for overlying muscles and skin.
Muscular- Bones provide attachment points for muscles and leverage for muscles to bring about
body movements; cotraction of skeletal muscle requires calcium ions.
Nervous - Skull and vertebrae protect brain and spinal cord; normal blood level of calcium is
needed for normal functioning of neurons and neuroglia.
Endocrine - Bones store and release calcium, needed during exocytosis of hormone-filled
vesicles and for normal actions of many hormones.
Cardiovascular - Red bone marrow caries out hemopoiess (blood cell formation); rhythmic
beating of the heart requires calcium ions.
Lymphatic and immunity - Red bone marrow priduces lymhpocytes, white bolld cells that are
involved in immune responses.
Respiratory - Axial skeleton of thorax protects lungs; rib movements assist in breathing; some
muscles used for breathing attach to bones via tendons.
Digestive - Teeth masticate (chew) food; rib cage protects esophagus, stomach, and liver; pelvis
protects portions of the intestines.
Urinary - Ribs partially protect kidneys; pelvis protects urinary bldder and urethra.
Reproductive - Pelvis protects overies, uterine (fallopian) tubes, and uterus in females and part
of ductus(vas) deferens and accessory glands in males; bones are an imprtant source of calcium
needed for milk synthesis during lactation.
Visceral and parietal peritoneums - CORRECT ANSWER - VISCERAL (INNER)
SURROUNDS THE ORGANS AND THE PARIETAL (OUTER) SURROUNDS THE CAVITY
(ABDOMINAL AND PELVIC)
Which system generates heat as needed for the body? - CORRECT ANSWER - Muscular
How do positive and negative feedback loops differ? - CORRECT ANSWER - Negative
feedback -Reverses a change in a controlle condition. (Blood pressure meds).
Positive - Stengthen a change in one of the body's comtrolled comditions. (Continued untill
interupted).
Questions and CORRECT Answers
Levels of Organization - CORRECT ANSWER - 1. Chemical 4. Organ
2. Cellular 5. System (organ)
3. Tissue 6. Organismal
Define tissue and organ. - CORRECT ANSWER - Tissue - Groups of cells with the same
embryonic origin and general function.
Organ - Several tissues having a related function.
Define metabolism. - CORRECT ANSWER - Sum of all chemical processes in the body.
Body planes. - CORRECT ANSWER - Sagittal (midsagittal, parasagittal)
Frontal/Coronal
Transverse
Oblique
What is interstitial fluid? - CORRECT ANSWER - Extracellular fluid that fills the narrow
spaces between cells of tissues.
2 body systems most responsible for regulating homeostasis. - CORRECT ANSWER -
Nervous and Endocrine Systems.
To what do axillary and popliteal refer? - CORRECT ANSWER - Axillary is the armpit.
Popliteal is behind the knee (petella).
Correctly apply the body directions such as inferior-superior, etc. - CORRECT ANSWER -
...
, Main functions of the major body systems - CORRECT ANSWER - Integumentary -
Bones provide strong support for overlying muscles and skin.
Muscular- Bones provide attachment points for muscles and leverage for muscles to bring about
body movements; cotraction of skeletal muscle requires calcium ions.
Nervous - Skull and vertebrae protect brain and spinal cord; normal blood level of calcium is
needed for normal functioning of neurons and neuroglia.
Endocrine - Bones store and release calcium, needed during exocytosis of hormone-filled
vesicles and for normal actions of many hormones.
Cardiovascular - Red bone marrow caries out hemopoiess (blood cell formation); rhythmic
beating of the heart requires calcium ions.
Lymphatic and immunity - Red bone marrow priduces lymhpocytes, white bolld cells that are
involved in immune responses.
Respiratory - Axial skeleton of thorax protects lungs; rib movements assist in breathing; some
muscles used for breathing attach to bones via tendons.
Digestive - Teeth masticate (chew) food; rib cage protects esophagus, stomach, and liver; pelvis
protects portions of the intestines.
Urinary - Ribs partially protect kidneys; pelvis protects urinary bldder and urethra.
Reproductive - Pelvis protects overies, uterine (fallopian) tubes, and uterus in females and part
of ductus(vas) deferens and accessory glands in males; bones are an imprtant source of calcium
needed for milk synthesis during lactation.
Visceral and parietal peritoneums - CORRECT ANSWER - VISCERAL (INNER)
SURROUNDS THE ORGANS AND THE PARIETAL (OUTER) SURROUNDS THE CAVITY
(ABDOMINAL AND PELVIC)
Which system generates heat as needed for the body? - CORRECT ANSWER - Muscular
How do positive and negative feedback loops differ? - CORRECT ANSWER - Negative
feedback -Reverses a change in a controlle condition. (Blood pressure meds).
Positive - Stengthen a change in one of the body's comtrolled comditions. (Continued untill
interupted).
